CN102690088B - High-intensity light foam concrete insulation board and preparation method thereof - Google Patents
High-intensity light foam concrete insulation board and preparation method thereof Download PDFInfo
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- CN102690088B CN102690088B CN201210186668.0A CN201210186668A CN102690088B CN 102690088 B CN102690088 B CN 102690088B CN 201210186668 A CN201210186668 A CN 201210186668A CN 102690088 B CN102690088 B CN 102690088B
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Abstract
The invention relates to a high-intensity light foam concrete insulation board and a preparation method thereof. Portland cement, thickening time control materials, aluminum sulfate, silicon and calcium complexing agent, a water reducing agent, hydrogen peroxide and water in a mass ratio of (65-85):(10-30):(1-3):(2-4):(0.5-1.5):(6-10):(50-60) are used as raw materials; and the preparation method comprises the following steps of: quickly stirring the portland cement, the thickening time control materials, the aluminum sulfate, the silicon and calcium complexing agent, the water reducing agent and water to prepare slurry; and adding hydrogen peroxide, quickly and uniformly stirring, forming by injection molding, standing and foaming, and naturally curing. According to the high-intensity light foam concrete insulation board, the absolute dry apparent density is 130 to 220kg/m<3>, the intensity is 0.25 to 0.50Mpa, pores have a closed honeycomb structure, and the coefficient of heat conductivity is 0.046 to 0.055W/m K; and the high-intensity light foam concrete insulation board can replace an organic insulation system and is used as an insulation cladding outside the outer wall of a building.
Description
Technical field
The invention belongs to building material technical field, relate to a kind of light heat insulation building material, be specially a kind of used for building exterior wall high-strength light foam concrete heat-preserving plate, and and the preparation method of this warming plate.
Background technology
The external-wall heat-insulation material that occupies at present dominant position is polyphenyl plate thin plastering system, carries out external wall outer insulation quite general on high-rise, high-rise building with polyphenyl plate thin plastering grid cloth binding face tile.The danger of this way is: once fire occurs, toxic gas and flame that not only the burning of organic heat-insulating plate produces can bring great risk to survivor, simultaneously because styrofoam is subject to thermogenetic hot melt compression deformation and grid cloth to cross thermal break-off, cause ceramic tile to fall, the potentially dangerous that escape personnel and salvor are caused is also fatal.
Foamed concrete is in cement slurry, evenly to introduce appropriate bubble, after sclerosis, form the honeycombed cement sill that appropriate pore is contained in a kind of inside, there is the premium propertiess such as lightweight, insulation, heat insulation, sound insulation, can be used as and do not fire energy-saving and heat-insulating material, sound-proof material, Highrise buildings damping energy-absorbing material and packing material.
The density range of foamed concrete is at 100～1800kg/m
3, its performance and use approach are relevant with its density and intensity.Density is lower, and heat-insulating property is better, and intensity is lower, and sound-proof sound-absorbing performance is better; Density is larger, and intensity is higher, and heat-insulating property is poorer, and impact resistance is stronger.
CN 201010607495.6 discloses a kind of ultralight foamed concrete of preparing with aluminosulfate cement, density rating 130～150kg/m
3, intensity 0.1MPa left and right, strength ratio is lower, and weather resistance is bad, and product carbonization gradually after use for some time, easily causes ornament layer big area to come off.CN 1011497533A discloses a kind of preparation method of foamed concrete, long with the method preparing product production process cycle, easily occurs the phenomenons such as product subsides, layering.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, a kind of high-strength light foam concrete heat-preserving plate is provided, to solve foamed concrete product in the contradiction aspect weather resistance, intensity and thermal property.
A kind of preparation method of high-strength light foam concrete heat-preserving plate is provided, and is another goal of the invention of the present invention.
High-strength light foam concrete heat-preserving plate of the present invention is that the component by following portions by weight is raw material: silicate cement 65～85, adjust gel material 10～30, Tai-Ace S 150 1～3, silico-calcium recombiner 2～4, water reducer 0.5～1.5, hydrogen peroxide 6～10, water 50～60; Other component mix and blends except hydrogen peroxide are made to slip, then cast after adding hydrogen peroxide to stir, the quiet bubble of stopping paying out, the warming plate that maintenance is made.
Wherein, the blast furnace ironmaking pulverized slag that described tune gel material is 2～4:1 by mass ratio mixes with metakaolin and forms, and preferably, described tune gel material is by fineness 450～500m
2the blast furnace ironmaking pulverized slag of/kg and fineness 550～600m
2the mass ratio that the metakaolin of/kg is pressed 3:1 mixes composition.
The active silica that described silico-calcium recombiner is 2～4:1 by mass ratio and calcium oxide mixing form.
In the present invention, described water reducer is the general water reducer material of building materials field, comprises polycarboxylate water-reducer or naphthalene water reducer.
The concrete preparation method of high-strength light foam concrete heat-preserving plate of the present invention is prepared according to following steps:
A. the silicate cement of described parts by weight, tune gel material, Tai-Ace S 150, silico-calcium recombiner, water reducer and water are added in stirrer, rapid stirring is made slip;
B. in finish mix slurry, add fast the hydrogen peroxide of described parts by weight, rapid stirring 1～3 minute;
C. pour casting in pattern into, quiet stopping paying out steeped 10 minutes, removes pattern after sizing, in 20～30 ℃ of maintenances 48～72 hours, makes warming plate.
Wherein, preferred 400～800 turn/min of the stirring velocity of described rapid stirring.
In above-mentioned raw materials of the present invention, silicate cement is mainly as the body material that intensity is provided, and after current aquation, forms fine and close continuous calcium silicate hydrate gel skeleton and produces enough intensity; Adjusting gel material is mainly for making silicate cement in reasonable time condensation cure, makes the bubble of mud inside can effectively be fixed up and form pore shape hole; Hydrogen peroxide is mainly to have alkalimetal ion exist and when temperature raises, form a large amount of bubbles, reaching the effect of lightweight matrix.
The high-strength light foam concrete heat-preserving plate that the present invention is prepared, its over dry apparent density is 130～220kg/m
3, intensity is 0.25～0.50MPa, and pore is closed honeycomb structure, and thermal conductivity 0.046～0.055W/mK can replace existing organic heat-insulating system, as external wall, is incubated cladding outward.
Compared with prior art, the high-strength light foam concrete heat-preserving plate that prepared by the present invention has following characteristics:
1) adopting silicate cement, common tune gel material and industrial hydrogen peroxide is raw material, and production cost is low, is convenient to popularizationization and produces, and intensity and durability degree are higher.
2) preparation method's technique is simple, and after cast, slip foaming is stablized, and nothing is subsided, demixing phenomenon, and 12 hours intensity of fast hydration can reach 70%, and curing cycle is short, is no more than 3 days.
3) foamed concrete of preparing is A level non-fire material, and inside is unicellular structure, good heat insulating, and tangent plane is honeycomb structure, is conducive to adhering to of adhesive mortar, is easy to construction.
Embodiment
The invention will be further described for embodiment plan given below; but can not be interpreted as it is limiting the scope of the invention; according to the present invention, content, to nonessential improvement and adjustment more of the present invention, still belongs to protection scope of the present invention to those skilled in the art.
Embodiment 1
By fineness, be 450m
2the blast furnace ironmaking pulverized slag of/kg and fineness are 550m
2the metakaolin of/kg is adjusted and is mixed tune gel material according to the mass ratio of 2:1, and active silica and calcium oxide form silico-calcium recombiner according to the mass ratio of 2:1.
42.5 grades of ordinary Portland cements, tune gel material, Tai-Ace S 150, silico-calcium recombiner, polycarboxylate water-reducer and process water are added in post-type mixer according to the mass ratio of 65:10:1:2:0.5:50, with the speed rapid stirring of 400 turn/min, make slip.
According to slip: the mass ratio that hydrogen peroxide is 150:10 is the technical grade hydrogen peroxide of 27.5wt% to adding fast concentration in slip, and after 1 minute, pour casting in pattern with the speed rapid stirring of 400 turn/min into, quietly stop paying out bubble 10 minutes.
After sizing in 2 hours, remove pattern, be carried to curing room, under the curing temperature of 20 ℃, maintenance is 48 hours, finally the good large-scale block of maintenance is cut into the light foam concrete warming plate that thickness is respectively the different thickness specifications such as 3mm, 5mm, 10mm on automatic cutting machine.
The high-strength light foam concrete heat-preserving plate over dry apparent density 150kg/m making
3, intensity 0.25MPa, thermal conductivity 0.046W/mK.
Embodiment 2
By fineness, be 500m
2the blast furnace ironmaking pulverized slag of/kg and fineness are 600m
2the metakaolin of/kg is adjusted and is mixed tune gel material according to the mass ratio of 4:1, and active silica and calcium oxide form silico-calcium recombiner according to the mass ratio of 4:1.
42.5 grades of ordinary Portland cements, tune gel material, Tai-Ace S 150, silico-calcium recombiner, naphthalene water reducer and process water are added in post-type mixer according to the mass ratio of 85:30:3:4:1.5:60, with the speed rapid stirring of 800 turn/min, make slip.
According to slip: the mass ratio that hydrogen peroxide is 160:8 is the technical grade hydrogen peroxide of 22.5wt% to adding fast concentration in slip, and after 3 minutes, pour casting in pattern with the speed rapid stirring of 800 turn/min into, quietly stop paying out bubble 10 minutes.
After sizing in 4 hours, remove pattern, be carried to curing room, under the curing temperature of 30 ℃, maintenance is 48 hours, finally the good large-scale block of maintenance is cut into the light foam concrete warming plate that thickness is respectively the different thickness specifications such as 3mm, 5mm, 10mm on automatic cutting machine.
The high-strength light foam concrete heat-preserving plate over dry apparent density 220kg/m making
3, intensity 0.50MPa, thermal conductivity 0.055W/mK.
Embodiment 3
By fineness, be 475m
2the blast furnace ironmaking pulverized slag of/kg and fineness are 575m
2the metakaolin of/kg is adjusted and is mixed tune gel material according to the mass ratio of 3:1, and active silica and calcium oxide form silico-calcium recombiner according to the mass ratio of 3:1.
42.5 grades of ordinary Portland cements, tune gel material, Tai-Ace S 150, silico-calcium recombiner, naphthalene water reducer and process water are added in post-type mixer according to the mass ratio of 75:20:2:3:1:55, with the speed rapid stirring of 600 turn/min, make slip.
According to slip: the mass ratio that hydrogen peroxide is 160:8 is the technical grade hydrogen peroxide of 26.5wt% to adding fast concentration in slip, and after 3 minutes, pour casting in pattern with the speed rapid stirring of 600 turn/min into, quietly stop paying out bubble 10 minutes.
After sizing in 3 hours, remove pattern, be carried to curing room, under the curing temperature of 25 ℃, maintenance is 48 hours, finally the good large-scale block of maintenance is cut into the light foam concrete warming plate that thickness is respectively the different thickness specifications such as 3mm, 5mm, 10mm on automatic cutting machine.
The high-strength light foam concrete heat-preserving plate over dry apparent density 180kg/m making
3, intensity 0.35MPa, thermal conductivity 0.051W/mK.
Specifications and the prior art of high-strength light foam concrete heat-preserving plate prepared by the present invention compare, and correlation data is as following table:
Claims (5)
1. a high-strength light foam concrete heat-preserving plate, is characterized in that the component by following portions by weight is raw material: silicate cement 65～85, tune gel material 10～30, Tai-Ace S 150 1～3, silico-calcium recombiner 2～4, water reducer 0.5～1.5, hydrogen peroxide 6～10, water 50～60; Other component mix and blends except hydrogen peroxide are made to slip, then cast after adding hydrogen peroxide to stir, the quiet bubble of stopping paying out, the warming plate that maintenance is made;
Wherein, described tune gel material is mixed and forms with metakaolin by the blast furnace ironmaking pulverized slag of mass ratio 2～4:1, and described silico-calcium recombiner is comprised of active silica and the calcium oxide mixing of mass ratio 2～4:1.
2. warming plate according to claim 1, is characterized in that described water reducer is polycarboxylate water-reducer or naphthalene water reducer.
3. warming plate according to claim 1, is characterized in that described tune gel material is by fineness 450～500m
2the blast furnace ironmaking pulverized slag of/kg and fineness 550～600m
2the mass ratio that the metakaolin of/kg is pressed 3:1 mixes composition.
4. the preparation method of claim 1 high-strength light foam concrete heat-preserving plate, is characterized in that preparing according to following steps:
A. the silicate cement of described parts by weight, tune gel material, Tai-Ace S 150, silico-calcium recombiner, water reducer and water are added in stirrer, rapid stirring is made slip;
B. in finish mix slurry, add fast the hydrogen peroxide of described parts by weight, rapid stirring 1～3 minute;
C. pour casting in pattern into, quiet stopping paying out steeped 10 minutes, removes pattern after sizing, in 20～30 ℃ of maintenances 48～72 hours, makes warming plate.
5. preparation method according to claim 4, the stirring velocity that it is characterized in that described rapid stirring is 400～800 turn/min.
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| CN104264847A (en) * | 2014-08-31 | 2015-01-07 | 廖来松 | Inorganic material outer wall heat insulation and preservation board and production method thereof |
| CN104310915B (en) * | 2014-10-10 | 2016-04-13 | 广东广泽实业有限公司 | A kind of high-strength heat preservation foamed concrete and preparation method thereof |
| CN105198366A (en) * | 2015-10-13 | 2015-12-30 | 安徽芜湖飞琪水泥制品有限公司 | Air-entraining cement column material composition and preparation method of air-entraining cement column |
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| CN201386338Y (en) * | 2009-02-23 | 2010-01-20 | 宫海西 | Inorfil-reinforced foam concrete insulating board |
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| CN201386338Y (en) * | 2009-02-23 | 2010-01-20 | 宫海西 | Inorfil-reinforced foam concrete insulating board |
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